摘要
研发了一种适用于预制混凝土夹心保温墙体的棒状不锈钢连接件,该连接件由不锈钢棒、倒锥形十字肋和套环组成,具有锚固性能好、便于安装的特点。通过拔出试验,对其拔出破坏形态与抗拔承载力等进行了较为系统的研究。结果表明:棒状不锈钢连接件的拔出破坏形态为连接件端部混凝土劈裂破坏;破坏时连接件自身应变较小,极限应变为屈服应变的40%;连接件的抗拔承载力为14.8k N,具有较大安全余量。
A new kind of rod-like stainless steel connector for precast concrete sandwich insulation wall panels is developed. The connector is made of stainless steel rod,tapered cross rib and ring with characteristics of good anchoring and easy installation. Based on pull-out test,the failure mode and the pull-out capacity of rod-like stainless steel connector are fully studied. The results show that the failure is the concrete splitting at the end of connectors. The strain of the connectors is small when specimens are damaged,and the limit strain is 40% of the yield strain. The pull-out capacity of the connector is14. 8 k N and has a great safety margin.
作者
薛伟辰
张赛
苏瑞佳
胡翔
陈可君
XUE Weichen;ZHANG Sai;SU Ruijia;HU Xiang;CHEN Kejun(Department of Structural Engineering, Tongji University, Shanghai 200092, China;Kunshan Construction Engineering Quality Testing Center, Kunshan, Jiangsu 215337, China)
出处
《施工技术》
CAS
2018年第12期92-94,共3页
Construction Technology
基金
国家重点研发计划项目(2016YFC0701400)
中央高校基本科研业务费项目(0200219151)
关键词
预应力混凝土
夹心保温墙体
不锈钢连接件
抗拔性能
试验
precast concrete
sandwich insulation wall panels
stainless steel connectors
pull-out capacity
testing
